Okay, this is WAY oversimplified, but I'll sauce it.
A great deal of Scriptural study backs this up, and can be found here : cog49.com/ft.pdf
8 When the Most High divided to the nations … he set the bounds of the people according to the "number" of the children of Israel.
There are three generations of promise, and three generations of national inheritance.
The first is Jacob, who became Israel and whose nation was the promised land in the first day (millennium).
The second generation is his 12 sons that would become nations from 393BC and 1607 AD. They became Europe in this time.
The third generation was for Josephs two sons, which became the successive world powers, Great Britain and the US.
The last inheritance is for Benjamin. Today, we call it Israel. But it is not. It is Benjamin.
The whole free world is STILL the other tribes, which only collectively make up "Israel."
Read about the history of three days, from pg 24 - 29; and the whole history of this deception in the US, in "Judah Defined" p58 to Inheritance of Benjamin p67.
You will also find the reasons for the deception, as they are cryptically told in the Bible.
But take your time and study it if you really want to understand this greatest deception never told.